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process.scala
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process.scala
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//: ----------------------------------------------------------------------------
//: Copyright (C) 2017 Verizon. All Rights Reserved.
//:
//: Licensed under the Apache License, Version 2.0 (the "License");
//: you may not use this file except in compliance with the License.
//: You may obtain a copy of the License at
//:
//: http://www.apache.org/licenses/LICENSE-2.0
//:
//: Unless required by applicable law or agreed to in writing, software
//: distributed under the License is distributed on an "AS IS" BASIS,
//: WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
//: See the License for the specific language governing permissions and
//: limitations under the License.
//:
//: ----------------------------------------------------------------------------
package nelson
import cats.effect.IO
object process {
/** True if a program is on the path */
def isOnPath(program: String): IO[Boolean] =
IO {
val pb = new ProcessBuilder("which", program)
val proc = pb.start()
proc.waitFor() == 0
}
}